Pen



FIG. 1 is a front-top perspective view of a pen showing my new design;

FIG. 2 is a front-bottom perspective view thereof;

FIG. 3 is a rear-top perspective view thereof;

FIG. 4 is a rear-bottom perspective view thereof;

FIG. 5 is a front elevational view thereof, where the rear elevationalview is mirrored thereto;

FIG. 6 is an enlarged left elevational view thereof;

FIG. 7 is an enlarged right elevational view thereof;

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a bottom plan view thereof.

The broken lines shown are for illustrative purposes only and form nopart of the claimed design.

CLAIM The ornamental design for a pen, as shown and described.